One of the most popular bengali panchangam is called the "Phool Panjika".The following information are taken from a hard copy of that book.
Shuvaashuva Vara(weekday) Phala for shaving & nail/hair cutting are as follows:
Sunday(if done on)-Loss of wealth(is the result)
Tuesday-Loss of longevity.(AyuhAni)
Thursday-Loss of fame.(MAnhAni)
Friday-Loss of virility(or of semen).
Saturday-Extremely inauspicious,with results like loss of children and
Note that this is only the VAra Phala .Similarly there will be Tithi and Nakshtra phalas as well but those i have not found in that book.
Personally i follow these restrictions while cutting hair and nails but unable to do so while shaving .:D
Its better for you that you acquire a copy of the Panchangam that your family/region follows.Because, from what i have seen, these customs vary a lot with regions.And usually all Panchanga books have such info.
And,also avoid your janma vAra and janma nakshtra days, as a rule, for these acts.Hope this helps.